128480120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103613}}^1$

素因数の和:103655

約数の個数: 32

約数和(自身を含む): 298408320

約数和(自身を除く): 169928200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 103613, 207226, 414452, 518065, 828904, 1036130, 2072260, 3212003, 4144520, 6424006, 12848012, 16060015, 25696024, 32120030, 64240060, 128480120]

約数ペア:

[(1, 128480120), (2, 64240060), (4, 32120030), (5, 25696024), (8, 16060015), (10, 12848012), (20, 6424006), (31, 4144520), (40, 3212003), (62, 2072260), (124, 1036130), (155, 828904), (248, 518065), (310, 414452), (620, 207226), (1240, 103613)]